There is something about this machine that I find fascinating. Is it the effiecency, the savings on packaging and mailing I am not sure.
The machine can do up to 500 packages an hour, and Sparck says customers save on shipping and reduce their cardboard consumption by 20% by using the smallest possible box. (They also claim their taped-on-two-sides boxes are easier for the recipient to open and more likely to be flattened and recycled, though they offer no evidence to back that up.)
Via Core77